Improvement in window-sash fasteners



C. PARTELLO.

Improvement in Window-Sash Fasteners. No. 133,050. Pate ntedNov.12,1872.

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CHARLES PARTELLQ, OF WATEBTOWN, NEW YORK.

IMPROVEMENT IN WlNDOW-SASH FASTENERS.

Specificationforming part of Letters Patent No. 133,050, dated November12, 1872.

To all whom it may concern:

Be it known that I, CHARLES PARTELLO, of Watertown, in the county ofJefferson and State of New York, have invented certain new and usefulImprovements in Sash-Fastenin gs and I do hereby declare the followingto be a full, clear, and exact description of the same, reference beinghad to the accompanying drawing forming part of this specification, inwhichv Figure 1 is a perspective view of a windowsash, showing myimprovements applied to the fastening; Fig. 2 is a side elevation of thesame; and Fig. 3 is an edge view of the slot ted guide and thumb-platedetached from the sash.

Similar letters of reference in the accompanying drawing indicate thesame parts.

My invention relates to that class of sashfastenings composed of a flatspring secured at one end in the edge of the sash, so as to hold a shortstud upon its opposite end within a series of recesses in thewindow-casing.

' One end of a bent arm attached to the spring projects through a slotin the face of the sash, and forms a finger-piece which is grasped bythe operator to withdraw the stud from the rec'esses and raise the sash.A faceplate of metal, slotted for the passage of the fingerpiece, issometimes affixed to the sash to prevent the finger-piece from wearingthe wood. Inasmuch as the finger-piece is necessarily slight, it affordsbut a smallpoint to be grasped by the fingers, and is liable to bebroken upon a heavy sash or upon one that sticks or binds in its casing.The. object of my invention is to afford a protector for thefinger-piece, and at the same time an additiona l bearing or thumb-piecefor liftingthe sash? To this end it consists in constructing theface-plate with a diagonal thumb-piece at right angles, or nearly so, tothe general direction of the slot, so that the operator, grasping thefinger-piece and thumb-piece, shall press the former upward against thelatter to withdraw the locking-stud and raise the sash. By this meansthe strain upon the fin ger-piece is transferredto the thumb-piece, andthe di a gonal arrangement of the latter affords a strong wide purchasefor raising the sash. A very slight linger-piece may therefore be used,sufficient only to operate the spring.

In the accompanying drawing, A is the window-sash; B, the flat springsecured at one end within the edge of the same, and carrying thelocking-stud O at its lower end. D is the bent lever attached to .thespring at or near its free end, projecting through a slot in the face ofthe sash, so as to form a fingerpiece, E, as shown. These partsconstitute the ordinary sash-fastening, and are not, there fore, of myinvention. F is the metallic faceplate, cast with a wide diagonalthumb-piece, G, and with a curved slot, H, under the thumbpiecethroughwhich the finger-piece E projects. right angles, or nearly so, tothe thumb-piece, and its upper end terminates at the lower side of thelatter.

To unfasten and raise the window the opcrator grasps the pieces E G withthe thumb and finger and pushes the fin ger-piece upward against thethumb-piece, which therefore sustains the whole weight of the sash whilebeing raised, and relieves the finger-piece of all strain.

Having thus described my invention, what I claim is- The metallicface-plate F, secured to the sash, and constructed with the diagonalthumbpiece E and slot H immediately beneath the thumb-piece, incombination with the bent arm D E and the spring-fastening B 0,substantially as described, for the purpose specified.

CHARLES PARTELLO.

Witnesses:

MARTlN V. Krr'rs, J NO. L. BAKER.

The general direction of the slot is at

